Constructing an 12,000 gallon rainwater cistern under the house.
Building the system that collects, purifies and stores rainwater.
Painting the interior walls.
Placing foam insulation under and around the floor slab.
Pouring the foundation walls and the walls of the cistern.
Building the root cellar north of the house.
Pouring the footings and the floors of the cistern and root cellar.